A dating app geared toward gay and bisexual men is embroiled in controversy after it was accused of sharing the HIV statuses of its users with at least two companies.

The two app optimization companies, Apptimize and Localytics, reportedly received information from the accounts of Grindr users that stated their HIV status and the date of their last HIV test.

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“The HIV status is linked to all the other information. That’s the main issue,” Antonine Pultier told BuzzFeed News. “I think this is the incompetence of some developers that just send everything, including HIV status.”

Pultier is a researcher with SINTEF. BuzzFeed News reports Norwegian nonprofit SINTEF was the first to discover the issue.

Created in 2009, Grindr currently has over 3 million daily active users. Just last week, the company drew praise after its officials announced it would provide an option within the app to send users HIV testing reminders every three to six months, along with the location of the nearest test site.

According to the SINTEF report, Grindr also gave advertising companies data that included the users' self-identified gay subculture, relationship status and exact GPS location.

In a statement to BuzzFeed News, Grindr's Chief Technology Officer Scott Chen said, “Thousands of companies use these highly-regarded platforms. These are standard practices in the mobile app ecosystem. No Grindr user information is sold to third parties. We pay these software vendors to utilize their services.”